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Quick Details

  • Standard: API, ASTM, GB, API 5L, ASTM A53-2007, GB 13296-2007, GB 6479-2000, GB 9948-2006, GB/T 17396-1998, GB/T 3639-2000, GB/T 5312-1999
  • Grade: 10#-45#, 16Mn, A53-A369, Q195-Q345, 10#, 20#, 16Mn, A106(B,C), A179-C, Q195, Q235, Q345
  • Thickness: 1 - 70 mm
  • Section Shape: Round
  • Outer Diameter: 6 - 600 mm
  • Place of Origin: Shandong, China (Mainland)
  • Secondary Or Not: Is Secondary
  • Application: Fluid Pipe
  • Technique: Hot Rolled
  • Certification: API
  • Surface Treatment: hot rolled
  • Special Pipe: API Pipe
  • Alloy Or Not: Is Alloy
  • certificate: ISO& SGS
  • seamless seam: straight seam
  • surface: Smooth,Metallic luster

Packaging & Delivery

Packaging Details 1) In bundle with steel strips; 2) By plastic bag then strips;3)according to the customer's request
Delivery Time 25days after received the deposit

    Seamless alloy steel tube for construction material  

Product Description




DescriptionASTM A335, ASTM A213, JIS G3458, JIS A3462, DIN17175, GB5310, GB9948
StandardASTM A335, ASTM A213, JIS G3458, JIS A3462, DIN17175, GB5310, GB9948
MaterialP1, P2, P12, P11, P22, P5, P9, P91, T1, T2, T11, T5, T9, T22, ST52, X42, X46, X52, X60, X70,   15CrMo,Cr5Mo,10CrMo910,12Cr2Mo,13CrMo44,12CrMo195, 42CrMo,42CrMO44,
6 mm~2500mm
Wall thickness1mm~120mm
Length 12m, 11.8m, 6m, 5.8m or as required
ApplicationAlloy steel pipe applies to petroleum, chemical industry, electric power, boiler, high
temperature resistant, low temperature resistant, corrosion resistant part. The size
of Alloy steel pipe can be made according to the customers requirements.


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Company Information


Qingdao Kwayt Co.,Ltd is the subsidiary company of Shandong Hongsheng Steel Pipe Co., Ltd. which is engaged in exportation of steel pipes and fittings. Shandong Hongsheng Steel Pipe Co., Ltd.  is the largest manufacturing and sales enterprise for galvanized steel pipe ,seamless steel pipe and fittings in the north of ShandongProvince, The Company registered capital is 33.6 million yuan, covers an area of 280 acres, has 570 staffs, including 9 senior engineers and 42 engineers. 






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Contact informations

Contact informations:

Factory name:Shandong Hong sheng Steel Pipe Co.,Ltd

Company Address: Room4002,5th Building, Xinan Industrial Park Area B,

Qingdao Econ.& Tech.Development Zone,China.





Contact person: Jessie Li





Q  what's your main products?

A  we supply seamless steel pipe, spiral steel pipe, ERW/LSAW steel pipe, butt-weld pipe fitting flanges.


Q   what material are you specialized in?

A   We main do ASTM A106 GR.B/A53 GR.B /API 5L GR.B DIN17175 , EN10204, EN10216, Grade: GR.B, ST45, ST35 , X42-X60, Q345B, A234 WPB, A420 WPL3/L6 / P5 / P9 / P11 / P22 ,SUS304/304L/316/316L and alloy 


Q   why your price was lower than others? And how about the quality of your product?

A   the products all according to the standard, please rest assured. And you can test by yourself or through the third party inspection. our price with lower profits, we just want to establish business relationship with you on the basis of quality, mutually bene-fit and exchange of needed goods. 


Q   I want to know your tolerance of thickness. Please let me know.

A   We produce the pipes and fittings according to GB API ASME and other standards strictly, the tolerance of thickness will be kept within in ±12.5%. It is standard data. Actually, we provide the tolerance will be within +/- 6%-8% . 


Q   can you supply us samples?

A   we just can supply part of the sample for free, but the mailing costs..




Transaction History of the Supplier

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Transaction Overview


Transaction Details

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China (Mainland) | Manufacturer, Trading Company
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3 Transactions 20,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $33,000
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